Britain's top EU diplomat quits with blistering attack over Brexit

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LONDON, Jan 4 (Reuters) - Britain's top diplomat at the EU quit his post with a blistering attack on the government, giving voice to what several sources say is wider frustration among officials over Prime Minister Theresa May's Brexit strategy.

The early resignation of envoy Ivan Rogers means that London will now launch its negotiations to leave the EU without the guidance of one of its foremost experts on Europe.

And his letter to staff, which was leaked to the media, included unmistakable criticism of the government's approach, straining the rules that have shielded the politically neutral civil service from elected leaders for generations.

Brexit supporters said his words were little more than sour grapes